package com.bw.service;

import com.bw.bean.DataBean;

import java.util.List;

public interface DataBeanService {
    //各章节播放统计  sql
    List<DataBean> select1();

    //各试卷成绩分布sql
    List<DataBean> select2();

    //各省份交易统计 sql
    List<DataBean> select3();

    //交易综合统计sql
    List<DataBean> select4();
}
